Introduction to the molding of mullite bricks

Ingredients for mullite brick
The production of lightweight mullite bricks uses sawdust, styrofoam pellets and their mixtures as additives for ashes. Add ingredients according to the formula. When mixing ingredients, first add clinker, industrial alumina, kaolin to the mixing tank for dry mixing for 2-3 minutes, and then add additives and binding agents (additional). After 24 hours of sleepy material can be used.
 
Molding and drying of mullite bricks
Lightweight mullite bricks are molded using high-frequency vibration pressure, measuring 230 x 114 x 65mm. First weigh the weight of the raw materials (calculated according to the density). The key is to adjust the pressure and time during molding. Otherwise, the bricks are pressed and layered, and the additives are concentrated in the upper layer. After burning, surface defects are likely to occur. Bake at 40 ° C for 24 hours and 60 ° C for 24 hours.
 
Burning of mullite brick
The bricks are dried and fired in a domestic 24M heavy oil tunnel kiln. The temperature is controlled at 1400 ± 10 ° C. The firing cycle is 24 hours, the heat preservation is 4 hours, and the cart speed is 60 minutes / car.
 
The new process used in the production of lightweight mullite bricks—high-frequency vibration pressure forming—is simple and practical, and the performance of the produced products is better, which is worth a lot of promotion.
 
If you are interested in our fused azs bricks, or need other types of refractory materials, please contact our Tianyang Refractory Group, we will definitely provide you with the best quality refractory materials and the most reasonable quotation.